| 1. Identity statement | |
| Reference Type | ePrint (Electronic Source) |
| Site | mtc-m16c.sid.inpe.br |
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S |
| Repository | sid.inpe.br/ePrint@80/2006/08.08.20.50 |
| Last Update | 2006:08.08.20.50.29 (UTC) administrator |
| Metadata Repository | sid.inpe.br/ePrint@80/2006/08.08.20.50.25 |
| Metadata Last Update | 2018:06.04.04.22.29 (UTC) administrator |
| Citation Key | PazRoss::PeGyFa |
| Title | Petrography of gypsum-bearing facies of the codó formation (late aptian), northern brazil  |
| Last Update Date | 2006-08-09 |
| Access Date | 2024, May 18 |
| Type of Medium | On-line |
| Secondary Type | PRE PI |
| Number of Files | 1 |
| Size | 244 KiB |
| 2. Context | |
| Author | 1 Paz, Jackson Douglas Silva 2 Rossetti, Dilce de Fátima |
| Resume Identifier | 1 2 8JMKD3MGP5W/3C9JGTQ |
| Group | 1 2 DSR-INPE-MCT-BR |
| Affiliation | 1 FUA 2 INPE |
| e-Mail Address | rossetti@dsr.inpe.br |
| Alternate Publication | Anais da Academia Brasileira de Ciências |
| Producer | Instituto Nacional de Pesquisas Espaciais |
| City | São José dos Campos |
| Stage of Alternate Publication | accepted |
| History (UTC) | 2008-04-26 01:40:00 :: rossetti -> administrator :: 2018-06-04 04:22:29 :: administrator -> rossetti :: |
| 3. Content and structure | |
| Is the master or a copy? | is the master |
| Content Stage | work-in-progress |
| Transferable | 1 |
| Keywords | evaporitos Aptiano Bacia Grajaú petrografia |
| Abstract | An original and detailed study focusing the petrography of evaporites from the late Aptian deposits exposed in the eastern and southern São Luís-Grajaú Basin is presented herein, with the attempt of distinguishing between primary and secondary evaporites, and reconstructing their post-depositional evolution. Seven evaporites phases were recognized: 1. chevron gypsum; 2. nodular to lensoidal gypsum or anhydrite; 3. fibrous to acicular gypsum; 4. mosaic gypsum; 5. brecciated gypsum or gypsarenite; 6. pseudo-nodular anhydrite or gypsum; and 7. rosettes of gypsum. The three first phases of gypsum display petrographic characteristics that conform to a primary nature. The fibrous to acicular and mosaic gypsum were formed by replacement of primary gypsum, but their origin took place during the eodiagenesis, still under influence of the depositional setting. These gypsum morphologies are closely related to the laminated evaporites, serving to demonstrate that their formation was related to replacements that did not affect the primary sedimentary structures. The pseudo-nodular anhydrite or gypsum seems to have originated by mobilization of sulphate-rich fluids during burial, probably related to halokinesis. The rosettes of gypsum, which intercept all the other gypsum varieties, represent the latest phase of evaporite formation in the study area, resulting from either intrastratal waters or surface waters during weathering. |
| Area | SRE |
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > DIDSR > Petrography of gypsum-bearing... |
| doc Directory Content | access |
| source Directory Content | there are no files |
| agreement Directory Content | there are no files |
| 4. Conditions of access and use | |
| data URL | http://urlib.net/ibi/sid.inpe.br/ePrint@80/2006/08.08.20.50 |
| zipped data URL | http://urlib.net/zip/sid.inpe.br/ePrint@80/2006/08.08.20.50 |
| Language | English |
| Target File | v1.pdf |
| User Group | administrator rossetti |
| Visibility | shown |
| Update Permission | transferred to ePrint update |
| 5. Allied materials | |
| Next Higher Units | 8JMKD3MGPCW/3ER446E |
| Citing Item List | sid.inpe.br/mtc-m21/2012/07.13.14.44.37 7 |
| Host Collection | sid.inpe.br/mtc-m18@80/2008/03.17.15.17 |
| 6. Notes | |
| Empty Fields | accessyear archivingpolicy archivist contenttype copyholder copyright creatorhistory descriptionlevel dissemination doi edition electronicmailaddress format identifier isbn issn label lineage mark mirrorrepository nextedition notes orcid parameterlist parentrepositories previousedition previouslowerunit progress project readergroup readpermission rightsholder schedulinginformation secondarydate secondarykey secondarymark session shorttitle sponsor subject tertiarymark tertiarytype url versiontype year |
| 7. Description control | |
| e-Mail (login) | rossetti |
| update | |